I just tried to upgrade this plugin automatically to 0.9. When trying to reactivate I got a fatal error. I had to delete the W3 files completely so I could do a fresh manual install. When looking at the files downloaded and following the install directions things aren't matching up. Also doing an automatic install through the admin panel puts all of the files in the plugin "wp-total-cache" folder within the plugin directory. As I understand some of the files so elsewhere correct? Doing an install as is will not allow me to activate the plugin. Can someone check the zip file and see if the directory structure is set up properly within that and see if the instructions are up to date please?

When I follow the internal links to upgrade it appears the install is successful. The plugin cannot be activated again after that. It just says fatal error when I try. I deleted the old plugin manually and manually installed and got the same error. I had to re-download the last stable release and use it and it worked fine.

If you're having upgrade/update issues you have to remove the plugin completely and install from scratch. Nothing has been changed in the plugin for ~4 months with regard to how activation works. Every upgrade some users have a challenge. Because W3TC has to copy some files into their proper locations, there can be surprises.

Unfortunately that is the nature of how caching is implemented, so I appreciate your patience and understanding.